<style>
.ht-theme-main {
  --ht-accent-color: #2c78d4;
  --ht-foreground-color: #1a2533;
  --ht-background-color: #f8f9fa;
  --ht-row-header-odd-background-color: #f8f9fa;
  --ht-row-header-even-background-color: #e9ecef;
  --ht-row-cell-odd-background-color: #f8f9fa;
  --ht-row-cell-even-background-color: #e9ecef;
  --ht-cell-horizontal-border-color: #cbd5e0;
  --ht-cell-vertical-border-color: #cbd5e0;
  --ht-wrapper-border-color: #a0aec0;
}
</style>

<div id="example1" class="disable-auto-theme"></div>